Check the listing for details. The Lufkin Rule Co. Outside Diameter Spring Caliper. Condition: Used. Listed at 22.50 USD. The Lufkin Rule Co. Outside Diameter Spring Caliper *****Selling a collection of nice dividers and calipers. About 1/2 of them are Starrett. Feel free to make an offer on any combination or on all of them I have listed. There are approximately 38 listed in 35 different lots. Individually they are priced at around $940 for all of them. I will take considerably less if you take all 35 lots. I have not cleaned any of these, they are as I found them. I will always combine shipping if you buy multiple lots, just shoot me a message or wait until I send you an invoice. Once you pay, I can't do anything. The descriptions are as complete and accurate as I can make them, but I am not an expert on these items. Use the pictures as your primary source of information. If you need additional pictures or information shoot me a message. Thanks